Apple's share value reached as high as $644 a share, which put the entire company's value at $600.4 billion, according to the Associated Press. The stock closed at $628.44, down 1.2 percent from the day before and putting it's value back below $600 billion.

Apple is widely considered to be the most valuable company in the world.

Only one other company has ever been worth that much money: Microsoft. It's market value hit a high of $619 billion on December 30, 1999, the AP reported, and hovered above $600 billion for 13 trading days. Microsoft is now worth about $255 billion, according to the AP.

Apple reported record-breaking profits for the last quarter of 2011 in January, BBC News reported, and it revealed it had $97.6 billion in cash at the end of last year. The ever-popular technology company's stock value has increased 58 percent in 2012, roughly doubling in value since last June, according to the Journal.

The company recently announced it plans to share billions of dollars in profits with shareholders, and issued its first dividend in more than a decade, paying $2.65 per share, the Journal reported. Apple has also said it will buy back as much as $10 billion in stock over the next three years.